private static List<HeaderCollection> PerRecipientList(IEnumerable<Header> fields)
{
List<HeaderCollection> perRecipientList = new List<HeaderCollection>();
HeaderCollection headers = new HeaderCollection();
foreach (var dsnField in fields)
{
if(dsnField.IsNamed(SeperatorHeader) && ! headers.IsNullOrEmpty())
{
perRecipientList.Add(headers);
headers = new HeaderCollection();
continue;
}
headers.Add(dsnField);
}
if (! headers.IsNullOrEmpty())
{
perRecipientList.Add(headers);
}
return perRecipientList;
}
/// <summary>
/// Extract DSN fields
/// Fields are formatted just like MIME headers, but embedded within the Body of MimeEntity instead
/// </summary>
/// <param name="fieldEntity">Source entity</param>
/// <returns>Collection of fields</returns>
public static HeaderCollection ParseDSNFields(MimeEntity fieldEntity)
{
if (fieldEntity == null)
{
throw new ArgumentNullException("fieldEntity");
}
Body DSNBody = fieldEntity.Body;
if (DSNBody == null)
{
throw new DSNException(DSNError.InvalidDSNBody);
}
HeaderCollection DSNFields = null;
try
{
DSNFields = new HeaderCollection(MimeSerializer.Default.DeserializeHeaders(DSNBody.TrimEmptyLines()));
}
catch (Exception ex)
{
throw new DSNException(DSNError.InvalidDSNFields, ex);
}
if (DSNFields.IsNullOrEmpty())
{
throw new DSNException(DSNError.InvalidDSNFields);
}
return DSNFields;
}
/// <summary>
/// Extract per-recipient dsn headers as a collection
/// Fields are formatted just like MIME headers, but embedded within the Body of MimeEntity instead
/// </summary>
/// <param name="fieldEntity">Source entity</param>
/// <returns>Collection of <see cref="HeaderCollection"/></returns>
public static List<HeaderCollection> ParsePerRecientFields(MimeEntity fieldEntity)
{
if (fieldEntity == null)
{
throw new ArgumentNullException("fieldEntity");
}
Body dsnBody = fieldEntity.Body;
if (dsnBody == null)
{
throw new DSNException(DSNError.InvalidDSNBody);
}
HeaderCollection dsnFields = new HeaderCollection();
try
{
dsnFields.Add(new HeaderCollection(MimeSerializer.Default.DeserializeHeaders(dsnBody.PerRecipientSeperator()))
, PerRecipientFieldList());
}
catch (Exception ex)
{
throw new DSNException(DSNError.InvalidDSNFields, ex);
}
if (dsnFields.IsNullOrEmpty())
{
throw new DSNException(DSNError.InvalidDSNFields);
}
return PerRecipientList(dsnFields);
}
/// <summary>
/// Extract MDN fields (RFC 3798 Section 3.1.*).
/// Fields are formatted just like MIME headers, but embedded within the Body of MimeEntity instead
/// </summary>
/// <param name="fieldEntity">Source entity</param>
/// <returns>Collection of fields</returns>
public static HeaderCollection ParseMDNFields(MimeEntity fieldEntity)
{
if (fieldEntity == null)
{
throw new ArgumentNullException("fieldEntity");
}
Body mdnBody = fieldEntity.Body;
if (mdnBody == null)
{
throw new MDNException(MDNError.InvalidMDNBody);
}
HeaderCollection mdnFields = null;
try
{
mdnFields = new HeaderCollection(MimeSerializer.Default.DeserializeHeaders(mdnBody.Text));
}
catch(Exception ex)
{
throw new MDNException(MDNError.InvalidMDNFields, ex);
}
if (mdnFields.IsNullOrEmpty())
{
throw new MDNException(MDNError.InvalidMDNFields);
}
return mdnFields;
}